1618443452 has 12 divisors (see below), whose sum is σ = 2998880640. Its totient is φ = 761620416.

The previous prime is 1618443433. The next prime is 1618443473. The reversal of 1618443452 is 2543448161.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11900252 + ... + 11900387.

It is an arithmetic number, because the mean of its divisors is an integer number (249906720).

Almost surely, 2^1618443452 is an apocalyptic number.

It is an amenable number.

1618443452 is a deficient number, since it is larger than the sum of its proper divisors (1380437188).

1618443452 is a wasteful number, since it uses less digits than its factorization.

1618443452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23800660 (or 23800658 counting only the distinct ones).

The product of its digits is 92160, while the sum is 38.

The square root of 1618443452 is about 40229.8825750213. The cubic root of 1618443452 is about 1174.0840187638.

The spelling of 1618443452 in words is "one billion, six hundred eighteen million, four hundred forty-three thousand, four hundred fifty-two".